From symfony2 form to a simple form users get incorrect password - symfony

Question

Originally creating a normal registration form (email + password) using the symfony form builder i found no problems at all registering my users.
For some technical issues and strategic stuff im not using any more the symfony form builder and i just made a common html form. The username, salt and password gets saved in database but when i tried to login it does not work, so the password or salt are wrong, and that makes me think that maybe the salt is created using a token send as a hidden field created by the symfony form builder, am i right?
So, originally since the symfony form builder allows you to parse the data directly into an entity i did something like this:
if( 'POST' === $this->getRequest( )->getMethod() ) {
$form->bindRequest( $this->getRequest( ) );
if( $form->isValid( ) ) {
$userSignup = $form->getData( );
$user = $userSignup->getUser( );
$user->setPassword( $this->_encodePassword( $user ) );
Now, since im using a normal form:
if(isset($_GET['user_signup']['user']['username']) && $this->_validemail($_GET['user_signup']['user']['username'])) $username = $_GET['user_signup']['user']['username']; else die('BAD EMAIL');
if(isset($_GET['user_signup']['user']['password']) && strlen($_GET['user_signup']['user']['password']) >= 5 && strlen($_GET['user_signup']['user']['password']) <= 20) $password = $_GET['user_signup']['user']['password']; else die('BAD PASSWORD');
$user = new user();
$user->setUsername($username);
$user->setPassword( $this->_encodePassword( $user ) );
The encodePassword function:
protected function _encodePassword( User $user )
{
$factory = $this->get( 'security.encoder_factory' );
$encoder = $factory->getEncoder( $user );
return $encoder->encodePassword( $user->getPassword( ), $user->getSalt( ) );
}
Im re utilizing someone else code so maybe im having trouble understanding how encodePassword works.

Answer 1

If you want registration system in your web application install FOSUserBundle.
Then you can use the userManager for create, register and edit any user.

Answer 2

you should create a salt first (using some random function) and use $user->setSalt($salt) in your controller ...
... or generate the salt inside the User's __construct() method.
FOSUserBundle i.e. creates the salt in the constructor of the User object using:
public function __construct()
{
$this->salt = base_convert(sha1(uniqid(mt_rand(), true)), 16, 36);
// ...
}
reference here.
Otherwise the encoder called at $this->_encodePassword($user) won't find the salt calling the user object's getter getSalt().
tip:
In symfony2 you should never try to access GET parameters using $_GET ...
... use the Request object instead.
Please read the Symfony2 and HTTP Fundamentals chapter of the book.